摘要：
---创建waterfallcreate or replace type waterfall is object(name varchar2(30),height number);--创建rivercreate or replace type rivertest is object(name va... 阅读全文
服务于区块链开拓者www.zhidnet.com |
|
摘要：
---创建waterfallcreate or replace type waterfall is object(name varchar2(30),height number);--创建rivercreate or replace type rivertest is object(name va... 阅读全文
|